Boiler for hot-water heating plants



DecQG, 1927.

w. F. M PHEE BOILER FOR HOT WATER HEATING iLANTS Filed June 11 1925 2Sheets-Sheet 2 R 0 T N E V N W I. H PHE E BY. M (6;

ATTORNEYS Patented er. 1927.

WILLIAM FRANCIS MOPHEE, OF CHICAGO, TILLIN 01S.

BOILER FOR HOT-WATER HEATING PLANTS.

Application filed June 11,

My invention relates to improvements in improved boiler for hot waterheating plants, and it consists in the combinations, constructions, andarrangements herein de-.

a scribed and claimed. 1

An object of my invention is to provide an improved boiler of the-typedescribed by means of which initial circulation in the hot water heatingsystem brought about immediately after establishing a lire in the firebog: by generation of steam in a unit of the boiler closely adjacent tothe fire in which a small quantity of water is placed.

A further object of my invention is to provide an improved boiler forhot water heating plants of the character described in which verticallydisposed chambers are rovided in the boiler jacketand which communicateat their lower ends with the inlet openings of the heating units,whereby water admitted to the heating units is taken direct- 1y fromthetop portion of the boiler water jacket where it is at its highesttemperature.

A further object of my invention is to provide an improved boiler forhot water heating plants of which the construction is such that theproducts of combustion must travel along the entire surface of theseveral heating units before the gases are permitted 311 to escapethrough the flues.

A further object of my invention is to provide an improved boiler forhot water heating plants in which direct circulation vertically throughthe units is prevented.

A further object of my invention is to provide a boiler for hot waterheating plants in which the possibility of accumulation of minerals onthe inner walls of the units is practically precluded due to the absenceof do cavities, corrugated surfaces, and the like,

which ordinarily serve to promote such accumulation.

A further object of my invention is to provide a device of the typedescribed which as is simple in construction, durable, and thorou hlypractical commercially.

ther objects and advantages will appear in the following specification,and the novel features of the invention will be particularly 160 pointedout in the appended claim.

My invention is illustrated in the accompanying drawing forming part ofthis application, in which Figure 1 is a sectional view of an embodimentof my invention,

1925. Serial No. 56,476.

Figure 2 is .a sectional view along the line 2-2 of Fig. 1,

Figure 3 is a sectional view along the line 3 33 of Figure 1,

Figure 4: is a section alongthe line 4-4 of Figure 1, and

Figure 5 is a sectional view along the line 5-5 of Fig. 1.

In carrying out In invention I make use ot a substantially be -shapedvertical water acket 1. The water jacket is provided with a passageway 2theretlirough at the upper enl, and has an inlet 3 ad acent the lower enAn oil burner 4 is provided with a deflector plate 5 and is disposedwithinthe inner wall 8 of the jacket. The deflector plate 5 is soconstructed as to deflect flames 6 toward the inner wall of the jacket1.

The water jacket is provided with a pair of auxiliary outlets 7 at theupper end which may be used in certain types of heating systemsrequiring more than one outlet.

The heating elements of my improved boiler comprise a plurality ofrelatively thin pancake units having extremely thin side walls. Thefirst of the units is shown at 9 and is connected at diametricallyopposite points to the water jacket 1 by the provision of tubular neckmembers 10. i 35 This unit 9 is substantially annular in contour and itsouter peripheral wall 11 just clears the inner wall 8 of the jacket 1 sthat expansion of the unit will not injure the jacket but so close as toprevent the passage of the products. of combustion between the wall 8 ad the unit 9. The. central passage of the annulus is shown at 12 and issufliciently large in diameter to permit the produets of combustion fromthe burner 4 to pass therethrough, having first been deflected from theadjacent wall portions of the wall 8. The unit 9 is so close to the,burner 4 as to permit the actual genera ion of steam therein, which isfor the purpose of exciting 1M and starting circulation of watervdirectly through the radiators or other heating devices used withboilers, in a manner hereinafter described.

The unit 9 is connected by means of a pair of diametrically opposedvertical passages 13 which are connected with a similar pair of passages14 forming a part of the second unit shown. at 15 in Figure/1. This unit15 is constructed of the same'thin mas Ill terial of which the unit 9 isconstructed.

The unit 15 issubstantially three inches less in diameter than thedistance from opposite points of the wall 8, so that theprodnets ofcombustion must pass between the peripheral walls 16 of the unit 15 andthe .adjacent portions of the wall 8;

A. third unit 17 is connected by means of connected passages 18 and 19associated with the units 15 and 17 respectivel'y-tothe unit 15. Frominspection of Figure 3it will be noted that the passages 19 are disposedsubsta tially 90 from the passages 13. Thus'dir ct circulation of waterfrom the unit 9 to the unit 17 is prevented. v

The only difference between the units 9 and 17 is that a passage20corresponding to thepassage -12in function through the the unit-'9. Theunit 17 is connected by -means of vertically extending diametricallyrear portion of the jacket 1 as sho unit 17 is disposed toward the rearwall of the unit 17, and out of'alignment with the passage 12. The outereripheral wall 21 of the unit 17 lies close y adjacent to the inner wall8 of the" jacket -1as in the case of opposed passages 22 with a last orupper unit 23. This unit has its outer peripheral wall 24 extending forsubstantially 270 of its circumference, in close engagement with theadjacent wall 8 of the jacket 1. 5 The remaining 90 degrees beindisposed at the forward portion of the unit is set back from upperportion of the unit 23, and extends,

through the opening 2' in the jacket 1. This I tubular neck is threadedas shown at 29 and a lock nut 30 is disposed upon the threaded portionand arranged to bear upon the outer surface of the'jacket 1 so that bytightening the nut 30 an upward pull is exerted upon the verticallyaligned units 9, 15, 17 and .23. Itshould be understood of course thatsuitable pacln'ng may be disposed between, the

l portion 30 and the wall of the jacket, so as lea gtherethr to reventthe prodnlc-ts of combustion from 7 From an inspection of the drawing itwill be noted thata pair of vertical comparti ments areprovided on eachside. of the'water jacket 1 b the provision of parallel side walls 30 wich open with a. bottom wall 31 as tocause water admitted to the inletopenings of the tubular neck members 10 to be drawn from the top portionofthe water jacket. The height of'the walls 30 is just short of the topcrown plate of the jacket.

mouth of the tubular passages 10.

E From the foregoing description of the various parts of the device theoperation I thereof may be readily understood. My improved boiler for"hot Water heating plants is especially well adapted for use where it isdesirable to supplyfhot water in radiators upon a relatively short.notice. The boiler may be successivelyv used in very small in:stallations requiring small quantities of Water, or in largeinstallations in which a large number of radiators are employed. In thelatter event, the number of units is increased, as well as thevolume.The increase in volume is usually effected by in creasing the diameterand not the height of the units.

' Let us assume that the water system is of normal temperature, and thatit is desired to supply hot water to the radiators. this event, theburner 4 is actuated, causing the flames and the products of combustionthereof to be deflected by the deflector plate 5 toward the wall 8 ofthe jacket 1. These flames and products of combustion can not passbetween the wall 8 and .theends 11 of the unit 9, so they must movetoward the vcenter of .the combustion chamber along the lower wall ofthe un'it,9 and up through the passage 12. k

The course of the flames and hot gases will then follow the lower wallof the unit 15 and up past the peripheral wall 16 of the unit, whereuponthe hot gases will rise and be deflected from the adjacent walls of thejacket 1 of the lower wall of the unit 17 toward the rear centralportion of the unit 17 and up through the passage 20. Y

The course of the hot gases and products of combustion willthen betoward the rear under surface of the unit 23, whereupon they mustcontinue to the front wall 25 of the unit 23 and pass upwardl overtheunit 23 and out of the flue26. t should be noted that the major portionof the unit 23 lies close to the wall 8 of the jacket 1 while'only theforward portion of the wall 25 is away'from the wall to permit thepassage of gases there- -beyond. I 8

Having thus followed the course of the products of combustion, it isevident that practically every portion of the surface of the units isencompassed in hot gases. Therefore nearly all of the heat therefrom maybe absorbed by the. water within the units. Y From" inspection ofFigurel it will be noted that the unit 9 is relatively close to theburner 4.- The walls of this unit as well as the remainin have beendescribed as relatively thm. My object in providing especially thinwalls'is to permit the transmamas through the aligned passages 13 and14-. of

the units 9 and 15 respectively, thus exciting circulation of waterthrough the units. The outlet 29 is connected directly with the mainfeed pipe to the radiators. It is obvious that ,water from the boilersmust circulate through the radiators and supply heat in the vicinity ofthe radiators.

In Figure 1 I have shown an auxiliary outlet 7 for the jacket 1 whichmay be used where more than one outlet is desired, or a connection tothe pipe 29 if circulation should prove to be too rapid.

All water admitted to the units must pass through the verticalcompartments formed by the merger of the vertical side walls 30 andbottom walls 31, which means, of course, that water admitted to the unitis drawn from the top of the water jacket and not from the surroundingportions of the water jacket in the vicinity of the tubular inlets 10.

This construction greatly facilitates the continuous operation of thesystem, and affords a practically constant supply of hot 30 water. Thewater at the lower portion of the jacket is heated principally byconduction and by merger with the warmer water at the top. I

I claim:

A boiler for hot water heating plants comprising a combustion chamber, awater jacket enclosing said combustion chamber and having a toparcuate-shaped in cross section, the water jacket being of uniformthickness throughout, a plurality of water heating units disposed insaid combustion chamber, water passageways disposed in said water jackethaving their lnlet openin disposed adjacent to the top of the wateracket, and havin their outlet openings communicating wit the lowermostheating unit a cold water inlet pi e for said water jacket communicatingwit the water jacket adjacent to the bottom thereof, water'conduitsconnecting adjacent heating units together, said water conduits beingstaggered with respect to each other for causing the entire volume ofwater within the heatlng unitsto flow upwardly as the water is heated,the uppermost heating unit having a conicalshaped outlet passagewaydisposedin the center of the heating unit, whereby all of the water inthe uppermost heating unit will pass through said conical-shapedpassageway, and an outlet pipe connected to said outlet pasageway.

WIIAM FRANCIS MOPHEE.

